CN202663326U - Power tracking control device and photovoltaic power generation system - Google Patents
Power tracking control device and photovoltaic power generation system Download PDFInfo
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- CN202663326U CN202663326U CN2012202247113U CN201220224711U CN202663326U CN 202663326 U CN202663326 U CN 202663326U CN 2012202247113 U CN2012202247113 U CN 2012202247113U CN 201220224711 U CN201220224711 U CN 201220224711U CN 202663326 U CN202663326 U CN 202663326U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Abstract
The utility model is suitable for the field of photovoltaic power generation and provides a power tracking control device and a photovoltaic power generation system. The power tracking control device comprises: an input circuit used for connecting a solar cell; a maximum power control circuit connected with the input circuit for tracking the power of a solar cell panel; a PWM pulse modulation circuit connected with the maximum power control circuit; a phase-shift circuit connected with the PWM pulse modulation circuit; and an interleaving parallel circuit which is used for boosting and is connected with the input circuit and the phase-shift circuit respectively. An interleaving parallel multi-MPPT tracking device is adopted, so that the single-machine capacity of an MPPT tracking circuit is improved and also the current stress and the ripple of an output current of each switch tube are reduced, thereby improving the reliability of the photovoltaic power generation system. In addition, under a condition that input parameters of the photovoltaic power generation system are inconsistent because the irradiation of the photovoltaic power generation system is different, etc., the high-efficiency maximum power tracking can be realized.
Description
Technical field
The utility model belongs to field of photovoltaic power generation, relates in particular to a kind of power tracking control device and photovoltaic generating system.
Background technology
Along with the acceleration of industrial step is advanced, the shortage of resources problem is day by day serious, and electric energy is the key that supports the world industry development, and the main generating resource of using at present is the various non-renewable resources such as coal, oil; This non-renewable resources are one of development key factors that restricting the future economy.The renewable generation technology that develops a kind of green, environmental protection has become the grand strategy plan of countries in the world, and wherein photovoltaic generation becomes one of master plan.And control is a pith of photovoltaic generating system to the maximal power tracing of photovoltaic battery panel, therefore, is an emphasis of field of photovoltaic power generation research with regard to the maximal power tracing to photovoltaic battery panel that how to improve photovoltaic generating system.
Because the blocking of shade, the parameter of photovoltaic cell component own is inconsistent and the electricity generation system photovoltaic battery panel configures and all can cause the photovoltaic generating system input inconsistent in the inconsistent situation; These all can cause plummeting of energy output, and this reason that causes the photovoltaic system generating efficiency to descend is called system mismatch; System mismatch is difficult to obtain by simple computing formula to the actual influence of energy output: the variations in temperature on the cloud, near the reflection of article, various inclination angle and direction, surface contamination and the solar battery array that cover, wave of part for example; In fact, even a small amount of area of a solar battery array crested also can cause 25% to 50% power loss.
The utility model content
The purpose of this utility model is to provide a kind of photovoltaic generating system that can improve to the power tracking control device of the maximal power tracing of photovoltaic battery panel.
The utility model is achieved in that a kind of power tracking control device, comprising: be used for the input circuit with the solar cell access; Be connected with described input circuit, be used for the maximum power control circuit of the maximum power of tracking solar cell panel; The pwm pulse modulation circuit that is connected with described maximum power control circuit; The phase-shift circuit that is connected with described pwm pulse modulation circuit; And respectively with described input circuit be connected phase-shift circuit and be connected, be used for the crisscross parallel circuit that boosts.
Further, described crisscross parallel circuit comprises: the first switching tube, second switch pipe, the first electric capacity, the second electric capacity, the first inductance, the second inductance; The first end of the first switching tube is connected with an end of the second inductance, the second end ground connection of the first switching tube, and the control end of the first switching tube connects the pwm pulse modulation signal, the control end control first end of described the first switching tube and the conducting between the second end; One end ground connection of described the first electric capacity, the other end of described the first electric capacity is connected with the other end of described the second inductance; The first end of second switch pipe is connected with an end of the first inductance, the second end ground connection of second switch pipe, and the control end of second switch pipe connects the pwm pulse modulation signal, the control end control first end of described second switch pipe and the conducting between the second end; One end ground connection of described the second electric capacity, the other end of described the second electric capacity is connected with the other end of described the first inductance.
Further, described the first switching tube is the first metal-oxide-semiconductor, and the grid of the first metal-oxide-semiconductor is as the control end of the first switching tube, and the drain electrode of the first metal-oxide-semiconductor is as the first end of the first switching tube, and the source electrode of the first metal-oxide-semiconductor is as the second end of the first switching tube.
Further, described second switch pipe is the second metal-oxide-semiconductor, and the grid of the second metal-oxide-semiconductor is as the control end of second switch pipe, and the drain electrode of the second metal-oxide-semiconductor is as the first end of second switch pipe, and the source electrode of the second metal-oxide-semiconductor is as the second end of second switch pipe.
The purpose of this utility model also is to provide a kind of photovoltaic generating system, comprises photovoltaic battery panel and the power tracking control device that is connected with described photovoltaic battery panel, and described power tracking control device is above-mentioned power tracking control device.
In the utility model, adopt staggered many MPPT tracking means that is incorporated into the power networks not only can heighten the single-machine capacity of MPPT tracking circuit, and reduced the current stress of each switching tube and the ripple of output current, thereby improved the reliability of system; In addition, do not cause on an equal basis under the inconsistent condition of photovoltaic generating system input parameter in the irradiation of photovoltaic generating system and can realize efficient maximal power tracing.
Description of drawings
Fig. 1 be in the prior art under photovoltaic shade condition cell panel input schematic diagram;
Fig. 2 is many MPPT control module structural representation that the utility model provides;
Fig. 3 is the modular structure schematic diagram of the power tracking control device that provides of the utility model;
Fig. 4 is the circuit diagram of the many MPPT controls of the crisscross parallel that provides of the utility model.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
The full name of MPPT controller " MPPT maximum power point tracking " (Maximum Power Point Tracking) controller for solar is the upgraded product of traditional solar charging/discharging controller.So-called MPPT maximum power point tracking namely refers to the generating voltage that controller can the detecting real-time solar panels, and follows the trail of ceiling voltage current value (VI), make system with the highest efficient to charge in batteries.Below we explain the basic principle of MPPT controller for solar with the mode of a kind of mechanical analogue contrast to everybody.
Fig. 2 shows the structure of many MPPT control module; A plurality of cell panel A1, A2, A3 ... An is connected with the DC/AC transducer by maximal power tracing device An, a plurality of cell panel B1, B2, B3 ... Bn is connected with the DC/AC transducer by maximal power tracing device Bn, and the DC/AC transducer connects electrical network.Many MPPT of crisscross parallel control technology is a kind of technology of applied solar energy power field, be used under different radiation parameters, following the tracks of the peak power output of photovoltaic battery panel, it is characterized in that input circuit, the crisscross parallel circuit, the maximum power control algorithm, phase-shift circuit, the boosting rectifier control algorithm, the DSP CONTROL unit forms.It is characterized in that can there be shade in many MPPT of crisscross parallel control technology at photovoltaic battery panel, surperficial deposition etc. cause under the different condition of irradiation or maximal power tracing obtains peak efficiency in the different situation of the output of photovoltaic generating system unit because the assembly difference causes.Simultaneously, use the crisscross parallel topological structure, reduced the output ripple of MPPT tracking circuit.
The power tracking control device that the utility model provides is mainly used in the photovoltaic generating system, the power tracking control device that this photovoltaic generating system comprises photovoltaic battery panel and is connected with photovoltaic battery panel; Fig. 3 shows the modular structure of the power tracking control device that the utility model provides, and for convenience of explanation, only shows the part relevant with the utility model, and details are as follows:
The power tracking control device comprises: input circuit 101, crisscross parallel circuit 102, maximum power control circuit 103, pwm pulse modulation circuit 104 and phase-shift circuit 105; Wherein input circuit 102 is used for solar cell is accessed, maximum power control circuit 103 is connected with input circuit 102, be used for the maximum power of tracking solar cell panel, pwm pulse modulation circuit 104 is connected with maximum power control circuit 103, phase-shift circuit 105 is connected with pwm pulse modulation circuit 104, crisscross parallel circuit 102 is connected with phase-shift circuit with input circuit 101 respectively and is connected, and is used for boosting.
As shown in Figure 4, crisscross parallel circuit 102 comprises: the first switching tube, second switch pipe, the first capacitor C 1, the second capacitor C 2, the first inductance L 1, the second inductance L 2; Wherein the first end of the first switching tube Q1 is connected with an end of the second inductance L 2, the second end ground connection of the first switching tube Q1, the control end of the first switching tube Q1 connects the pwm pulse modulation signal, the control end control first end of described the first switching tube Q1 and the conducting between the second end; One end ground connection of the first capacitor C 1, the other end of described the first capacitor C 1 is connected with the other end of described the second inductance L 2; The first end of second switch pipe Q2 is connected with an end of the first inductance L 1, the second end ground connection of second switch pipe Q2, and the control end of second switch pipe Q2 connects the pwm pulse modulation signal, the control end control first end of second switch pipe Q2 and the conducting between the second end; One end ground connection of the second capacitor C 2, the other end of the second capacitor C 2 is connected with the other end of the first inductance L 1.Crisscross parallel circuit 102 is by two switching tubes, two electric capacity, and two booster circuits that inductance forms, they connect by wire, consist of the effect that boost boosts.
In the utility model, switching tube can be the components and parts such as metal-oxide-semiconductor, triode, controllable silicon; Wherein, when the first switching tube was the first metal-oxide-semiconductor Q1, the grid of the first metal-oxide-semiconductor Q1 was as the control end of the first switching tube, and the drain electrode of the first metal-oxide-semiconductor Q1 is as the first end of the first switching tube, and the source electrode of the first metal-oxide-semiconductor Q1 is as the second end of the first switching tube; When the second switch pipe was the second metal-oxide-semiconductor Q2, the grid of the second metal-oxide-semiconductor Q2 was as the control end of second switch pipe, and the drain electrode of the second metal-oxide-semiconductor Q2 is as the first end of second switch pipe, and the source electrode of the second metal-oxide-semiconductor Q2 is as the second end of second switch pipe.
In the utility model, input circuit 101 is by binding post and input protection device, and they play accesses solar panel many MPPT of crisscross parallel control circuit and protect in the situation that the excessive components and parts that do not damage of electric current.Maximum power control circuit 103 mainly is based on the software control algorithm of DSP, plays the function of the maximum power of following the tracks of cell panel.Phase-shift circuit 105 is the circuit that adopt dsp software control, plays to realize staggered function with driving signal.
The maximal power tracing of inverter when this novel practical patent is particularly suitable for organizing string, the MPPT controller of off-grid system, overcome under the shade condition, because the staggered control mode of the employing when the photovoltaic shade causes irradiation inconsistent, driving pulse is shifted to conducting and the cut-off of carrying out the control switch pipe, can reduce the output ripple of circuit, reduce filter capacitor.
Photovoltaic cell is in irradiation difference or the inconsistent situation of connection in series-parallel group string, output waveform as shown in Figure 1 can appear, photovoltaic cell output can present double-humped wave, common but tracking error can occur in the MPPT control situation, many MPPT of crisscross parallel control mode is to adopt topological structure and the MPPT technology of crisscross parallel to combine, each that realizes carried out the MPPT tracking to the group string of inverter or photovoltaic control, adopts the crisscross parallel driving pulse that switching tube is controlled.Be particularly suitable for organizing the serial type combining inverter and from the net photovoltaic controller.
The power tracking control device that the utility model provides is mainly used in the maximal power tracing of photovoltaic generation under the different radiation parameters.Many MPPT of crisscross parallel control technology is on the basis of crisscross parallel boost circuit, realizes many maximal power tracings technology.This technology not only can solve current single MPPT under the radiation parameter situation of change, and controller can be followed the tracks of the variation of cell panel power output fast, obtains more multi-energy
In the utility model, many MPPT of crisscross parallel control technology is a kind of technology of applied solar energy power field, be used under different radiation parameters, following the tracks of the peak power output of photovoltaic battery panel, can there be shade in many MPPT of crisscross parallel control technology at photovoltaic battery panel, and surperficial deposition etc. cause under the different condition of irradiation or maximal power tracing obtains peak efficiency in the different situation of the output of photovoltaic generating system unit because the assembly difference causes.
In the utility model, power circuit uses crisscross parallel as the power bearing part of the maximal power tracing unit of photovoltaic generating system.The output driving pulse of crisscross parallel circuit must carry out phase shift to be processed, and this circuit can be realized with hardware circuit, also can finish in DSP.
In addition, also comprise suitable maximum power control algorithm, its algorithm can be the disturbance observation, short circuit current ratio Y-factor method Y, interpolation calculation method, any one algorithm in conductance increment method or the FUZZY ALGORITHMS FOR CONTROL.The feature of many MPPT of crisscross parallel control technology must combine with crisscross parallel control in the MPPT control algolithm.
In the utility model, adopt staggered many MPPT tracking means that is incorporated into the power networks not only can heighten the single-machine capacity of MPPT tracking circuit, and reduced the current stress of each switching tube and the ripple of output current, thereby improved the reliability of system; In addition, do not cause on an equal basis under the inconsistent condition of photovoltaic generating system input parameter in the irradiation of photovoltaic generating system and can realize efficient maximal power tracing.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (5)
1. a power tracking control device is characterized in that, comprising:
Be used for the input circuit with the solar cell access;
Be connected with described input circuit, be used for the maximum power control circuit of the maximum power of tracking solar cell panel;
The pwm pulse modulation circuit that is connected with described maximum power control circuit;
The phase-shift circuit that is connected with described pwm pulse modulation circuit; And
Respectively with described input circuit be connected phase-shift circuit and be connected, be used for the crisscross parallel circuit that boosts.
2. power tracking control device as claimed in claim 1 is characterized in that, described crisscross parallel circuit comprises:
The first switching tube, second switch pipe, the first electric capacity, the second electric capacity, the first inductance, the second inductance;
The first end of the first switching tube is connected with an end of the second inductance, the second end ground connection of the first switching tube, and the control end of the first switching tube connects the pwm pulse modulation signal, the control end control first end of described the first switching tube and the conducting between the second end;
One end ground connection of described the first electric capacity, the other end of described the first electric capacity is connected with the other end of described the second inductance;
The first end of second switch pipe is connected with an end of the first inductance, the second end ground connection of second switch pipe, and the control end of second switch pipe connects the pwm pulse modulation signal, the control end control first end of described second switch pipe and the conducting between the second end;
One end ground connection of described the second electric capacity, the other end of described the second electric capacity is connected with the other end of described the first inductance.
3. power tracking control device as claimed in claim 2, it is characterized in that, described the first switching tube is the first metal-oxide-semiconductor, the grid of the first metal-oxide-semiconductor is as the control end of the first switching tube, the drain electrode of the first metal-oxide-semiconductor is as the first end of the first switching tube, and the source electrode of the first metal-oxide-semiconductor is as the second end of the first switching tube.
4. power tracking control device as claimed in claim 2, it is characterized in that, described second switch pipe is the second metal-oxide-semiconductor, the grid of the second metal-oxide-semiconductor is as the control end of second switch pipe, the drain electrode of the second metal-oxide-semiconductor is as the first end of second switch pipe, and the source electrode of the second metal-oxide-semiconductor is as the second end of second switch pipe.
5. a photovoltaic generating system comprises photovoltaic battery panel and the power tracking control device that is connected with described photovoltaic battery panel, it is characterized in that, described power tracking control device is each described power tracking control device of claim 1-4.
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| CN2012202247113U CN202663326U (en) | 2012-05-18 | 2012-05-18 | Power tracking control device and photovoltaic power generation system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475267A (en) * | 2013-08-14 | 2013-12-25 | 浙江工业大学 | Method for improving generating efficiency of photovoltaic array |
| CN103529899A (en) * | 2013-10-17 | 2014-01-22 | 深圳市禾望电气有限公司 | MPPT controller, power tracking device, photovoltaic power generation and energy storage system |
| CN103885521A (en) * | 2014-03-14 | 2014-06-25 | 河海大学 | Photovoltaic array MPPT method based on cuckoo search algorithm |
| CN106712258A (en) * | 2017-02-14 | 2017-05-24 | 台州航宁制冷设备有限公司 | Power supply system for photovoltaic and power grid interactive direct current air conditioner |
| TWI600997B (en) * | 2016-10-18 | 2017-10-01 | A solar power system maximum power tracking device | |
| CN108075725A (en) * | 2016-11-10 | 2018-05-25 | 深圳普唯能源科技有限公司 | A kind of novel solar power generation system |
| CN108181966A (en) * | 2017-12-29 | 2018-06-19 | 马鞍山职业技术学院 | A kind of photovoltaic MPPT control circuits and the photovoltaic multimodal MPP fast tracking methods based on voltage-power scan |
| CN113110689A (en) * | 2021-04-25 | 2021-07-13 | 江苏大学 | Maximum power point tracking controller considering reverse temperature difference and control method |
| CN113178894A (en) * | 2021-06-09 | 2021-07-27 | 阳光电源股份有限公司 | Photovoltaic inverter and MPP scanning control method thereof |
-
2012
- 2012-05-18 CN CN2012202247113U patent/CN202663326U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475267A (en) * | 2013-08-14 | 2013-12-25 | 浙江工业大学 | Method for improving generating efficiency of photovoltaic array |
| CN103529899A (en) * | 2013-10-17 | 2014-01-22 | 深圳市禾望电气有限公司 | MPPT controller, power tracking device, photovoltaic power generation and energy storage system |
| CN103529899B (en) * | 2013-10-17 | 2015-10-21 | 深圳市禾望电气股份有限公司 | MPPT controller, power tracking device, photovoltaic generation and accumulator system |
| CN103885521A (en) * | 2014-03-14 | 2014-06-25 | 河海大学 | Photovoltaic array MPPT method based on cuckoo search algorithm |
| CN103885521B (en) * | 2014-03-14 | 2015-11-18 | 河海大学 | A kind of photovoltaic array MPPT method based on cuckoo searching algorithm |
| TWI600997B (en) * | 2016-10-18 | 2017-10-01 | A solar power system maximum power tracking device | |
| CN108075725A (en) * | 2016-11-10 | 2018-05-25 | 深圳普唯能源科技有限公司 | A kind of novel solar power generation system |
| CN106712258A (en) * | 2017-02-14 | 2017-05-24 | 台州航宁制冷设备有限公司 | Power supply system for photovoltaic and power grid interactive direct current air conditioner |
| CN108181966A (en) * | 2017-12-29 | 2018-06-19 | 马鞍山职业技术学院 | A kind of photovoltaic MPPT control circuits and the photovoltaic multimodal MPP fast tracking methods based on voltage-power scan |
| CN113110689A (en) * | 2021-04-25 | 2021-07-13 | 江苏大学 | Maximum power point tracking controller considering reverse temperature difference and control method |
| CN113178894A (en) * | 2021-06-09 | 2021-07-27 | 阳光电源股份有限公司 | Photovoltaic inverter and MPP scanning control method thereof |
| CN113178894B (en) * | 2021-06-09 | 2024-04-12 | 阳光电源股份有限公司 | Photovoltaic inverter and MPP scanning control method thereof |
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Address after: 518000, Shiyan City, Guangdong, Baoan District Province, on the west side of the village on the west side of the ridge, plus five industrial zone, a layer of three, East and Shenzhen Patentee after: Shenzhen Growatt New Energy Co., Ltd. Address before: 518000, No. 12, building B, West building, Xicheng Industrial Street, Xixiang street, Shenzhen, Guangdong, Baoan District, 3 Patentee before: Shenzhen Growatt New Energy Technology Co., Ltd. |
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Effective date of registration: 20210204 Address after: 518101 2 / F and 3 / F, building 4, xibianling Jiayu Company Industrial Zone, Shangwu village, Shiyan street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: SHENZHEN GROWATT NEW ENERGY Co.,Ltd. Address before: 518000 East and third floors, 1st floor, building 5, xibianling Jiayu Company Industrial Zone, Shangwu village, Shiyan street, Bao'an District, Shenzhen City, Guangdong Province Patentee before: GROWATT NEW ENERGY TECHNOLOGY Co.,Ltd. |
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Address after: 518101 floor a401, 4-13, building a, Sino German European Industrial Demonstration Park, Hangcheng Avenue, guxing community, Xixiang street, Bao'an District, Shenzhen, Guangdong Patentee after: Shenzhen Growatt New Energy Technology Co.,Ltd. Address before: 518101 2 / F and 3 / F, building 4, xibianling Jiayu Company Industrial Zone, Shangwu village, Shiyan street, Bao'an District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN GROWATT NEW ENERGY Co.,Ltd. |
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